function fixEvent(e) {
  e = e || window.event;

  if (!e.target) e.target = e.srcElement;

  if (e.pageX == null && e.clientX != null ) { // если нет pageX..
    var html = document.documentElement;
    var body = document.body;

    e.pageX = e.clientX + (html.scrollLeft || body && body.scrollLeft || 0);
    e.pageX -= html.clientLeft || 0;

    e.pageY = e.clientY + (html.scrollTop || body && body.scrollTop || 0);
    e.pageY -= html.clientTop || 0;
  }

  if (!e.which && e.button) {
    e.which = e.button & 1 ? 1 : ( e.button & 2 ? 3 : ( e.button & 4 ? 2 : 0 ) )
  }

  return e;
}


function getCoords(elem) {
    var box = elem.getBoundingClientRect();

    var body = document.body;
    var docElem = document.documentElement;

    var scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop;
    var scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft;

    var clientTop = docElem.clientTop || body.clientTop || 0;
    var clientLeft = docElem.clientLeft || body.clientLeft || 0;

    var top  = box.top +  scrollTop - clientTop;
    var left = box.left + scrollLeft - clientLeft;

    return { top: Math.round(top), left: Math.round(left) };
}